Reference methods A1, item 1 of Table A.52.3 (insulated conductors in conduit in a thermally insulated wall) and A2, item 2 of Table A.52.3, (multi-core cable in conduit in a thermally insulated wall):The wall consists of an outer weatherproof skin, thermal insulation and an inner skin of wood or wood-like material having a thermal conductance of at least 10 W/m2·K.
The conduit is fixed so as to be close to, but not necessarily touching the inner skin.
Heat from the cables is assumed to escape through the inner skin only.
The conduit can be ****l or plastic.

Example of sizing cable

Electrical load named LOAD 2 is fed by Circuit 2 of switchboard DB2 3~400V as shown in Fig. 1 below

This report details the development and construction of an LED spotlight useable in a theatrical or architectural setting. In depth background information, initial design concepts, lighting instrument specifications, assembly, testing, and conclusions from results are highlighted in this ********. Project goals include efforts to support more energy efficient lighting in the arts and general lighting applications and a decrease in overall costs for energy used in all dramatic and architectural lighting applications.

The ******ive of this project is to research and design a practical 200W photovoltaic system at the lowest cost and highest efficiency in order to support the DC House Project. The impetus for this project stems from the necessity of delivering energy to people in developing countries who otherwise lack the benefits of electricity. The Photovoltaic System Design is divided into two main parts, the buck DC-DC converter and the optimized photovoltaic panel. The converter consists of schematics, efficiency calculations, load/line regulation calculations, component comparisons, data plots from simulations and testing. The optimized photovoltaic panel section includes component comparisons, complete construction drawings, PV advantages, and array characteristics

The Dyl-Light is a LED lighting fixture that is controlled with a recently released suite of entertainment technology protocols called A.C.N. This new protocol has a number of advantages to its use over the existing protocol, DMX512, used for controlling entertainment lighting fixtures. This project attempts to use this new protocol to directly control a light fixture, something that currently is not available on the market.The project includes several aspects of engineering from electronics, embedded systems, applications, networking, power electronics, and computer interfacing.
تكمن أهمية وضعه في قسم التصميم من حيث التكييف بعمل الليدات مع لواحقها في بعض متطلبات الإنارة الداخلية أو أقسام من الإنارة الخاصة لغرف النوم أو المكاتب التجارية أو صالات عرض الملابس أو ما يحتاج إلى الإنارة الخاصة

The scope of this project encompasses the design and analysis of the Cal Poly Power System at the distribution level using the SKM software environment. The purpose is to accurately model the power system in software so theoretical calculations and analysis can be executed. This requires sufficient preliminary research to obtain data for the main buildings on campus, sound interpretation of one line diagrams, designing the system within the software using realistic values and then performing analysis to model real world situations. The data collected is under maximum load conditions for a specified time period using medium voltage parameters. The analysis performed includes load flow, fault analysis (short circuit) and an arc flash study. Using this data facilities personnel can implement future protective devices in vulnerable areas of the power system, recognize and alleviate large load conditions using generators or alternative energy solutions, wear proper personal protective equipment (PPE), and analyze the impact of adding or removing machines or cables from the system. After the completion of this project I learned about typical power system design and protection schemes used to isolate faults. Troubleshooting a large power system is another important skill I developed from this endeavor. Additionally, this project has provided me with real world knowledge regarding power system devices like transformers, and allowed me to learn a new powerful software tool used in industry today.

Appliances that consume the most energy in a household usually involve heating, and an electric clothes dryer is one such appliance, consuming up to 4KW of power. The most environmentally friendly way is to hang clothes outside to dry, a natural solar and wind powered method, but unfortunately most people are unable to do so as some neighborhood communities do not allow the hanging of laundry outside as it is regarded as “unsightly”, for example. This project aims to provide an alternate solution to the wall-powered electric clothes dryer by designing one which operates entirely off the grid.